Group schema therapy for personality disorders: Systematic review, research agenda and treatment implications.

Objective: There are significant temporal and financial barriers for individuals with personality disorders (PD) receiving evidence-based psychological treatments. Emerging research indicates Group Schema Therapy (GST) may be an accessible, efficient, and cost-effective PD intervention, however, there has been no synthesis of the available evidence to date. This review therefore aimed to investigate the efficacy of GST for PDs by systematically synthesizing available literature.

Method: Five electronic databases were screened with resulting studies subjected to a specific eligibility criteria, which yielded fourteen relevant studies. Characteristics were extracted and methodological quality rigorously assessed.

Results: Strong support was evidenced for GST's ability to reduce Cluster B and C symptomology, particularly for Borderline and Avoidant PD. GST appeared to improve global symptom severity, quality of life and functional capacity, as well as treatment targets such as schemas and modes.

Conclusion: Although not without limitations and a moderate risk of bias, the current body of evidence supports GST as a potential solution to current service deficits in economical and evidence-based care for individuals with PD. Implications for treatment and future research are discussed.